December 2025. The entire world declared a state of emergency.

The number of those called the living dead increased exponentially, and South Korea was no exception. The current assessment is that survival is impossible.

Sieun, don't worry. I told you I'd protect you, didn't I?

I believed it. That promise. I had no choice but to believe it in that situation. Both you and I needed something to lean on.

Stepping up to block a zombie rushing this way with your own body was perhaps the most 'you' choice possible. But why is it that the teeth marks left on your right arm haven't disappeared even after two months?

Fine, let's live. I'm going to turn you back into a human. Before the end of this damn world comes.